The option I will have the lowest cost as imporared to the option II because the installation cost of Option I will be quite less, as if one system made can be used for different places but in Option II, the initial cost is too much because of labor, construction material, transportation, engineering, feasibility testing, and also maintenance cost.
Both option I and Option II, will have impact on environment because of using recent hazardous and chemical focused technologies. Chemicals, Construction Material, Trasnportation, Hazardous Material will cause singificant impact over the environment. This will also impact the soil, water and human on the location badly. In general terms, both technolgoies will impact but Option II will have more initially while Option I will impact for longer time.